WO2019029053A1 - 一种线性振动马达 - Google Patents

一种线性振动马达 Download PDF

Info

Publication number
WO2019029053A1
WO2019029053A1 PCT/CN2017/112170 CN2017112170W WO2019029053A1 WO 2019029053 A1 WO2019029053 A1 WO 2019029053A1 CN 2017112170 W CN2017112170 W CN 2017112170W WO 2019029053 A1 WO2019029053 A1 WO 2019029053A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
fixing portion
vibration motor
housing
linear vibration
Prior art date
Application number
PCT/CN2017/112170
Other languages
English (en)
French (fr)
Inventor
臧玮晔
张新众
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to US16/638,329 priority Critical patent/US20200227993A1/en
Publication of WO2019029053A1 publication Critical patent/WO2019029053A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs

Definitions

  • the invention relates to the field of electronic product technology. More specifically, it relates to a linear vibration motor.
  • a miniature linear vibration motor is usually used for feedback of the system, such as clicking the vibration feedback of the touch screen.
  • a linear vibration motor is a component that converts electrical energy into mechanical vibration using the principle of electromagnetic force.
  • a conventional linear vibration motor is usually installed in a mobile communication terminal, a portable terminal or the like, which is usually installed at an edge portion of the device, and receives vibrations. The object produces vibration in a vertical direction.
  • Existing linear vibration motors typically include a housing having a receiving chamber in which is disposed a stator assembly, a vibrator assembly, and an elastomeric support configured to suspend the vibrator assembly within the receiving chamber.
  • the stator assembly may be a magnet or a coil fixedly coupled to the housing, and the corresponding vibration assembly may be a coil or magnet that is supported by the elastic support for up and down vibration.
  • the existing magnets as the stator assembly or the vibrator assembly are all cylindrical solid core structures, and the coil is surrounded by the periphery of the magnet. After the coil is energized, the coil is subjected to the ampere force to generate electromagnetic force and between the magnetic field generated by the magnet. The interaction, in turn, causes the vibrator assembly to move up and down, which in turn results in vibration of the entire linear vibration motor.
  • the magnetic flux of the magnet is inefficient and affects the overall tactile sensation.
  • the existing motor assembly process is complicated, resulting in a large BOM cost and waste of process cost.
  • the existing linear vibration motor is only suitable for vibration experience under single frequency point, and does not meet the requirements of haptic feedback application for multi-frequency point vibration.
  • the existing magnet is generally fixed and fixed by the bonding method. When the motor is working, the magnet will be affected by the repulsive force of the vibrating component and its own gravity. The bonding strength between the magnet and the casing changes with time. It will be reduced, and it is easy to separate the bonding surfaces between the two.
  • Another object of the present invention is to provide a linear vibration motor which solves the problem that the bonding surface between the magnet and the casing is easily separated due to the long-term bonding between the magnet and the casing.
  • the problem and with this improvement, also facilitates the positioning installation between the magnet and the housing.
  • a linear vibration motor comprising: a stator assembly including a housing having a receiving cavity, and a magnet positioned within the receiving cavity and fixedly coupled to the inner side surface of the housing, the magnet comprising a hollow portion; a vibrator assembly, the vibrator assembly including a coil and a mass; the hollow portion extending along a vibrating direction of the vibrator assembly, the coil vibrating with the vibrator assembly and being inserted into a hollow portion of the magnet when the vibrator assembly vibrates; An elastic support member configured to suspend the vibrator assembly within a receiving cavity of the housing; the housing includes a fixing portion corresponding to the magnet, a top surface of the magnet and a bottom portion of the fixing portion The surface is bonded and fixed.
  • the fixing portion is stamped and formed by the housing into the receiving cavity.
  • the fixing portion is formed by an upper magnetic conductive plate bonded to a surface of the inner side wall of the casing.
  • At least a portion of the top surface of the magnet is fixedly bonded to at least a portion of the bottom surface of the fixed portion.
  • the magnet is fixedly secured to the outer edge of the bottom surface of the fixing portion by a top surface thereof.
  • the magnet is fixedly secured at an inner side edge of a bottom surface of the fixing portion by a top surface thereof.
  • the fixing portion is fixedly fixed to a central position of the top surface of the magnet by a bottom surface thereof.
  • the magnet is fixedly fixed to a central position of the bottom surface of the fixing portion by a top surface thereof.
  • the top surface of the magnet further includes a portion that forms a glue groove with the side wall of the fixing portion and the inner side wall of the housing.
  • the bottom surface of the magnet is fixedly coupled with a lower magnetic conductive plate.
  • the linear vibration motor provided by the invention can maximize the magnetism of the magnet by improving the structure of the magnet and the arrangement of the coil, and improve the utilization efficiency of the magnetic line of the coil magnet, thereby improving the electromagnetic driving force of the motor and the driving force.
  • the increase makes the effective bandwidth of the motor increase, and is convenient for the application of the dual-frequency or multi-frequency resonance frequency, satisfies the requirement of the vibration feeling provided by the motor under the multi-frequency point, and improves the tactile experience of the motor.
  • the linear vibration motor provided by the present invention is stamped into the accommodating chamber by a housing or a fixing portion formed by an upper magnetic conductive plate fixed to a surface of the inner side wall of the housing, and the magnet is fixedly bonded to the fixing portion.
  • the side wall of the fixing portion forms a glue receiving groove with the inner surface of the first casing, and the glue can be excessively coated within a certain range when the glue is applied, and excess adhesive is squeezed and overflowed to the glue tank, and the improvement is increased by the improvement.
  • the bonding area and the amount of glue between the magnet and the housing make the connection between the magnet and the housing more stable and stable, and the improvement between the magnet and the housing is facilitated by the improvement, which facilitates the connection between the two.
  • the connection is fixed.
  • Fig. 1 is a schematic view showing the assembly of a vibration motor according to an embodiment of the present invention.
  • FIG. 2 shows a cross-sectional view of a linear vibration motor in accordance with an embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing a portion of a linear vibration motor in which a fixing portion is stamped from the housing into a housing chamber, in accordance with an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a fixing portion of a linear vibration motor according to an embodiment of the present invention formed by an upper magnetic conductive plate bonded to a surface of an inner side wall of a casing.
  • FIG. 5 is a partially enlarged cross-sectional view showing a portion in which a fixing portion is stamped from the housing into a housing chamber in a linear vibration motor according to an embodiment of the present invention.
  • Fig. 6 is a partially enlarged plan view showing a section in which a fixing portion is formed by an upper magnetic conductive plate fixed to a surface of an inner side wall of a casing in a linear vibration motor according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing a top surface of a linear vibration motor magnet in combination with a bottom surface outer edge of a fixing portion in accordance with an embodiment of the present invention.
  • FIG. 8 shows a cross-sectional view in which a top surface of a linear vibration motor magnet is fixedly coupled to an inner side edge of a bottom surface of a fixing portion according to an embodiment of the present invention.
  • FIG 9 illustrates a cross-sectional view in which all of the top surface of the linear vibration motor magnet is combined with a portion of the bottom surface of the fixed portion and the outer surface of the top surface of the magnet completely coincides with the outer edge of the bottom surface of the fixed portion, in accordance with an embodiment of the present invention.
  • Figure 10 is a cross-sectional view showing a bottom surface of a linear vibration motor fixing portion in combination with a central position fixed to a top surface of a magnet according to an embodiment of the present invention.
  • FIG. 11 illustrates a cross-sectional view of a portion of a top surface of a linear vibration motor magnet and a bottom surface of a fixed portion in accordance with an embodiment of the present invention, and a top surface outer edge of the magnet completely coincides with an outer edge of a bottom surface of the fixed portion.
  • Figure 12 is a cross-sectional view showing the bottom surface of the linear vibration motor fixing portion completely coincident with the top surface of the magnet according to an embodiment of the present invention.
  • Figure 13 is a cross-sectional view showing a lower magnetic conducting plate of a bottom surface of a linear vibration motor magnet according to an embodiment of the present invention.
  • weights both of which refer to one of the components that cooperate with the magnet or coil to vibrate within the motor housing as a vibrator assembly.
  • present invention is mainly used for the improvement of the linear vibration motor used in the description, and may also be referred to as a Y-direction vibration motor.
  • a linear vibration motor will be specifically described as an example.
  • the present invention provides an improved linear vibration motor.
  • the magnetism of the magnet 2 can be maximized, the utilization efficiency of the magnetic line of the coil magnet can be improved, and the electromagnetic of the motor can be improved.
  • the driving force and the increase of the driving force increase the effective bandwidth of the motor, which is convenient for the application of the dual-frequency or multi-frequency resonant frequency, meets the requirements of the vibration of the motor under the multi-frequency point, and improves the tactile experience of the motor;
  • the inner surface of the first housing 11 is provided with an inwardly protruding fixing portion 10, and when the magnet 2 is fixedly attached to the fixing portion 10, the side wall of the fixing portion 10 and the first housing 11
  • the inner surface forms a glue tank, and the glue can be over-applied within a certain range when the glue is applied, and the excess glue is squeezed and overflowed to the glue tank, thereby increasing the bonding area and the amount of glue, thereby making the magnet
  • the fixing surface of 2 is more stable and stable. The problem that the magnet 2 is not fixed firmly and the bonding surface is easily separated after a long time is effectively solved, and the improvement enables the magnet 2 to provide a positioning function when being fixed to the housing, which is more convenient for fixing the connection between the two
  • FIG. 1 is a schematic view showing the assembly of a vibration motor according to an embodiment of the present invention.
  • 2 shows a cross-sectional view of a linear vibration motor in accordance with an embodiment of the present invention.
  • the linear vibration motor provided by the present embodiment includes a stator assembly including a housing 1 having a receiving cavity, and a magnet 2 located in the receiving cavity and fixed in combination with the housing 1, the magnet 2
  • the hollow portion 21 is extended along the vibration direction of the vibrator assembly.
  • the magnet 2 in the present invention may be a segmented or continuous annular structure, which is not limited in the present invention.
  • a vibrator assembly comprising a coil 3 disposed coaxially with the magnet 2 and a mass 4 disposed coaxially with the coil 3 around the periphery of the coil 3; when the vibrator assembly vibrates, the coil 3 follows The vibrator assembly vibrates and is inserted into the hollow portion 21 of the magnet 2.
  • An elastic support member 5 is configured to suspend the vibrator assembly within the receiving cavity of the housing 1.
  • the housing includes a fixing portion 10 disposed coaxially with the magnet, and a top surface of the magnet 2 is fixedly coupled to a bottom surface of the fixing portion 10.
  • the fixing portion 10 may be segmented or The continuous annular structure is not limited by the present invention.
  • the housing 1 includes a first housing 11 having an opening at the bottom, and a second housing 12 fixedly coupled to the opening; the first housing 11 and the second housing 12 constitute a housing having a receiving cavity Body 1.
  • both the first housing 11 and the second housing 12 are made of a material having magnetic permeability, so that it is convenient to close the magnetic lines of the magnet, so that the magnetic action of the magnet 2 is maximized to enhance the motor. Electromagnetic driving force.
  • the housing 1 has a circular structure. It is obvious that the housing 1 can also have a non-circular cross-section structure, for example, a rectangular parallelepiped shape and a rounded corner.
  • the vibrator assembly has a magnetic conductive plate 6, and the coil 3 and the mass 4 are fixedly coupled to the upper surface of the magnetic conductive plate 6, and a magnet 2 is inserted between the coil 3 and the mass 4.
  • the gap is 7.
  • the elastic support member 5 is fixedly fixed between the lower surface of the magnetic conductive plate 6 and the inner side surface of the second casing 12, and is configured to suspend the vibrator assembly
  • the housing 1 is housed in a cavity. .
  • the magnet 2 having a ring structure fixed in combination with the inner surface of the top wall of the first casing 11 is used as a stator assembly, and the coil 3 is inserted as a part of the vibrator assembly into the magnet 2 with the vibrator assembly.
  • the hollow portion 21, the magnet 2 having the annular structure as the stator, and the arrangement of the coil 3 as the vibrator are compared with the cylindrical solid-structure magnet used in the conventional vibration motor,
  • the magnetic lines of force of the cylindrical solid magnet are radiated and dispersed outward from the central axis, and the magnetic lines of force of the ring-shaped structural magnet of the present invention are concentrated on the central axis, and thus the magnetic field disposed at the coil position on the central axis of the magnet of the annular structure
  • the strength is higher than the coil disposed around the periphery of the columnar solid core magnet; and the coil of the present invention is disposed in the inner space of the magnet having the annular structure, and the diameter of the coil can be made smaller, so the effective number of coils is significantly higher than that of the coil.
  • the effective number of turns of the large-diameter coil around the cylindrical solid-core magnet, and the linear vibration motor provided by the invention can maximize the magnetic properties of the magnet, improve the utilization efficiency of the magnetic line of the coil magnet, improve the electromagnetic driving force of the motor, and drive
  • the increase of the force increases the effective bandwidth of the motor, facilitates the application of dual-frequency or multi-frequency resonant frequency, and satisfies the motor provided at multiple frequencies.
  • the demand for vibration improves the tactile experience of the motor and improves the overall performance of the linear vibration motor as a whole.
  • the present invention provides an improvement of the fixing method, the housing including a fixing portion 10 provided corresponding to the magnet, and a top surface of the magnet 2 is fixedly coupled to a bottom surface of the fixing portion 10.
  • the present invention provides a specific embodiment.
  • the bottom surface of the fixing portion is at least partially bonded and fixed to the top surface of the magnet.
  • the meaning is: 1.
  • the portion of the bottom surface of the fixing portion is combined with the portion of the top surface of the magnet; 2.
  • the portion of the bottom surface of the fixing portion is combined with all of the top surface of the magnet; 3.
  • the fixing All of the bottom surface of the portion is combined with a portion of the top surface of the magnet; 4.
  • the bottom surface of the fixed portion is all combined with all of the top surface of the magnet. Therefore, the key of the above combination is whether or not the glue tank 103 is formed.
  • the fixing portion 10 is formed by stamping the first housing 11 into the receiving cavity, as shown in FIG. 3; It is formed by combining an upper magnetic plate fixed to the inner side wall surface of the casing, as shown in FIG.
  • the forming method of the fixing portion is different, and the preparation process is different.
  • the first forming method is generally formed by a stamping process, and the size of the bottom surface of the formed fixing portion becomes smaller with the convex direction, and the second type of fixed magnetic conductive
  • the board process is often an equal-diameter structure, but the present invention is not limited thereto, and therefore will not be described again.
  • the fixing portion can be in the same manufacturing process as the first housing 11, thereby saving the manufacturing process. Further, if the following embodiments do not additionally define the manner in which the bottom surface 101 of the fixing portion 10 and the top surface 102 of the magnet 2 are combined, this embodiment can be applied to all of the enumerated and unlisted embodiments of the present invention by default. Possible bottom part of the fixed part 10 The manner in which the face 101 and the top surface 102 of the magnet 2 are combined.
  • FIGS. 3 and 4 only describe one way in which all of the bottom surface of the fixing portion is fixedly coupled to the portion of the top surface of the magnet, but FIG. 3 and FIG. 4 mainly illustrate the manner in which the fixing portion is formed, and there is no The manner of bonding the magnets is additionally limited. Therefore, FIGS. 3 and 4 are merely examples, and the formation of the fixing portion is not limited to the above-described combination.
  • FIG. 5 is a partially enlarged view of the fixing portion of FIG. 3
  • FIG. 6 is a partially enlarged view of the fixing portion of FIG.
  • the fixing portion 10 can provide a positioning point function for fixing the magnet 2, facilitate the fixing of the magnet 2, and the fixing portion 10
  • the bottom surface and the side surface form an outwardly expanding first step structure.
  • the fixing portion 10 can play a certain buffering effect, so that the adhesive first spreads over the remaining bottom surface of the fixing portion and then spreads to the inside of the housing. On the wall.
  • the present invention cites two preferred embodiments for specific description: 1.
  • the top surface 102 of the magnet 2 and the fixing portion The outer edge of the bottom surface 101 of the 10 is bonded and fixed; 2.
  • the top surface of the magnet is fixedly fixed with the inner edge of the bottom surface of the fixing portion; for the sake of clarity, the above-mentioned preferences are respectively shown in FIG. 7 and FIG. Examples 1, 2.
  • the top surface 102 of the magnet 2 is fixedly coupled to the outer edge of the bottom surface 101 of the fixing portion 10 as shown in FIG. 7, and the outer surface of the top surface 102 of the magnet 2 has an remaining surface which is a fixed surface of the magnet top surface 102.
  • a partial surface of the outer edge, the remaining surface and the outer side wall of the fixing portion and the corresponding inner side wall of the casing form a glue receiving groove 103.
  • the top surface 102 of the magnet 2 is fixedly coupled to the inner edge of the bottom surface 101 of the fixing portion 10, and the inner side of the top surface 102 of the magnet 2 has an remaining surface which is the top surface of the magnet 2 A portion of the surface beyond the inner edge of the fixed portion 10, the remaining surface and the outer side wall of the fixed portion and the corresponding inner side wall of the housing form a glue receiving groove 103.
  • FIG. 4 shows that all of the top surface 102 of the magnet is on the bottom surface 101 of the fixed portion, the top surface 102 of the magnet may also have an inner edge corresponding to one of the inner or outer edges and the bottom surface 101 of the fixed portion. Or one of the outer edges is completely coincident, as shown in FIG. 9, which is merely a specific meaning for explaining the complete coincidence, and FIG. 4 can also be a more preferred embodiment, that is, the top surface 102 of the magnet is fixedly bonded to The central portion of the bottom surface 101 of the fixed portion, this more preferred embodiment makes process proofing more convenient and accurate.
  • the present invention exemplifies two preferred embodiments for the purpose of illustration.
  • the bottom surface 101 of the fixing portion is fixedly fixed to a central position of the top surface 102 of the magnet.
  • the fixed portion bottom surface 101 may also have one of the inner or outer edges completely coincident with one of the inner or outer edges of the magnet top surface 102, as shown in FIG. 11, although FIG. 11 merely recites The inner edge of the fixed portion bottom surface 101 completely coincides with the inner edge of the magnet top surface 102, but it is also possible that the outer edge of the fixed portion surface 101 completely coincides with the outer edge of the magnet top surface 102.
  • the bonding manner of the embodiment can also form the adhesive portion 103 of the remaining portion of the top surface of the magnet and the side wall of the fixing portion and the inner side wall of the housing, thereby increasing the amount of glue and the fixed area, so that the fixing portion and the magnet are more firmly fixed. .
  • the meaning of the combination means that the inner edge of the bottom surface 101 of the fixing portion completely coincides with the inner edge of the top surface 102 of the magnet, and the outer edge of the bottom surface 101 of the fixing portion completely coincides with the outer edge of the top surface 102 of the magnet. Or it can be described that the fixed portion bottom surface 101 completely coincides with the magnet top surface 102.
  • the adhesive can be spread in two directions when implemented, as shown in the drawing, that is, it can be 180°, and the positioning is provided compared to the direct fixing. At the same time as the function, the amount of glue can be increased.
  • the present invention fixes the lower magnetic conductive plate 13 on the bottom surface of the magnet, as shown in FIG. 13, such that the horizontal surface of the lower magnetic conductive plate 13 and the space formed by the first casing 11 are magnetic.
  • the sense line is uniform and stable, so that it has higher sensitivity and lower distortion when used in audio-visual equipment such as speakers.
  • the fixed portion 10 of FIG. 13 is the upper magnetic conductive plate, the upper magnetic conductive plate and the lower magnetic conductive plate 13 is thickened to highlight the upper and lower magnetic plates 13, just to make Figure 13 more intuitive.
  • the present embodiment only describes the formation of the lower magnetic conductive plate 13, and does not define the manner of bonding the bottom surface 101 of the fixed portion and the top surface 102 of the magnet, or defines the formation of the fixed portion, and those skilled in the art should It is to be understood that the present embodiment can adopt any combination of the protection of the present invention, and therefore will not be described again.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

一种线性振动马达，所述线性振动马达包括：定子组件，所述定子组件包括具有容纳腔的壳体（1），和位于所述容纳腔内且与所述壳体（1）内侧表面结合固定的磁体（2），所述磁体（2）包括中空部（21）；振子组件，所述振子组件包括线圈（3）和质量块（4）；弹性支撑件（5），配置为将所述振子组件悬置在所述壳体（1）的容纳腔内；所述壳体（1）包括与所述磁体（2）对应的固定部（10），所述磁体（2）的顶部表面与所述固定部（10）的底部表面结合固定。提升了线圈磁体磁力线的利用效率。

Description

一种线性振动马达 技术领域
本发明涉及电子产品技术领域。更具体地，涉及一种线性振动马达。
背景技术
随着通信技术的发展，便携式电子设备，例如手机、平板电脑、智能穿戴设备、多媒体娱乐设备等已经成为人们的生活必须品。在这些电子设备中，通常使用微型的线性振动马达来做系统的反馈，例如点击触摸屏的振动反馈等。
线性振动马达是一种利用电磁力原理将电能转化为机械振动的部件，常规的线性振动马达通常安装在移动通信终端、便携式终端等内，其通常安装在设备的边缘部分，并且在与接收振动的对象相垂直的方向上产生振动。
现有线性振动马达通常包括具有容纳腔的壳体，容纳腔内设置有定子组件、振子组件以及配置为将振子组件悬置在容纳腔内的弹性支撑件。定子组件可为与壳体固定连接的磁体或者线圈，与之对应的振动组件可为通过弹性支撑件支撑进行上、下振动的线圈或者磁体。其中现有的作为定子组件或者振子组件的磁体均为柱状实芯结构，线圈围绕在磁体外围，在线圈通电后，线圈便会受到安培力作用产生电磁力，并与磁体所产生的磁场之间相互作用，进而使得振子组件向上和向下运动，进而会获得整个线性振动马达发生振动的效果。
然而现有的线性振动马达存在以下缺陷：
1、磁体的磁力线利用效率低下，影响整体触觉感受。
2、现有马达装配过程复杂，造成较大的BOM成本以及工艺制程成本浪费。3、现有线性振动马达只适用于单频点下振动体验，不满足对于多频点振动的触觉反馈应用要求。
4、现有磁体一般采用粘接的方式与壳体结合固定，马达工作时，磁体会同时受到振动组件的斥力和自身重力的影响，随着时间的推移，磁体与壳体之间的结合强度会随之降低，易出现二者之间粘接面分离等现象。
在实际工作中，现有技术中的粘接方式已经不能满足实际工作的需要。
因此，需要提供一种新的线性振动马达，以解决上述现有技术所存在的问题。
发明内容
本发明的一个目的是提供一种线性振动马达，该振动马达结构可最大化利用磁体的磁性，提升线圈磁体磁力线的利用效率，提升了马达的电磁驱动力,从而提高马达的触觉体验。
本发明的另一个目的是提供一种线性振动马达，通过对磁体与壳体之间固定结构的改进，解决了目前磁体与壳体之间因时间长久二者之间的粘接面容易分离的问题，且通过该改进，还便于磁体与壳体之间的定位安装。
为达到上述目的，本发明采用下述技术方案：
一种线性振动马达，所述马达包括：定子组件，所述定子组件包括具有容纳腔的壳体，和位于所述容纳腔内且与所述壳体内侧表面结合固定的磁体，所述磁体包括中空部；振子组件，所述振子组件包括线圈和质量块；所述中空部沿振子组件振动方向延伸，所述振子组件振动时，所述线圈随振子组件振动并插入所述磁体的中空部；弹性支撑件，配置为将所述振子组件悬置在所述壳体的容纳腔内；所述壳体包括与所述磁体对应的固定部，所述磁体的顶部表面与所述固定部的底部表面结合固定。
优选地，所述固定部由所述壳体向容纳腔内冲压形成。
优选地，所述固定部由结合固定在壳体内侧壁表面的上导磁板形成。
优选地，所述磁体的顶部表面的至少部分与所述固定部的底部表面的至少部分结合固定。
优选地，所述磁体通过其顶部表面结合固定在所述固定部底部表面的外侧边缘处。
优选地，所述磁体通过其顶部表面结合固定在所述固定部底部表面的内侧边缘处。
优选地，所述固定部通过其底部表面结合固定在所述磁体顶部表面的中央位置。
优选地，所述磁体通过其顶部表面结合固定在所述固定部底部表面的中央位置。
优选地，所述磁体的顶部表面还包括与固定部侧壁以及壳体内侧壁形成容胶槽的部分。
优选地，所述磁体的底部表面结合固定有下导磁板。
本发明的有益效果如下：
1、本发明所提供的线性振动马达，通过改进磁体结构及其与线圈的配置方式，可最大化利用磁体的磁性，提升线圈磁体磁力线的利用效率，提升了马达的电磁驱动力，驱动力的增大使得马达有效频宽增大，便于双频或多频谐振频率的应用，满足多频点下对马达所提供振感的要求，提高了马达的触觉体验。
2、本发明所提供的线性振动马达，通过壳体向容纳腔内冲压或者由结合固定在壳体内侧壁表面的上导磁板形成的固定部，当磁体固定粘接在所述固定部上时，固定部侧壁与第一壳体的内表面形成容胶槽，在涂胶时可以在一定范围内过量涂胶，多余的粘胶挤压溢出至该容胶槽，通过该改进增大了磁体与壳体之间的粘接面积和容胶量，使得磁体与壳体之间的连接更加牢固稳定，且通过该改进还便于磁体与壳体之间的定位安装，利于二者之间的连接固定。
附图说明
下面结合附图对本发明的具体实施方式作进一步详细的说明。
图1示出本发明一种实施方式的振动马达的装配示意图。
图2示出根据本发明的一种实施方式的线性振动马达的截面图。
图3示出根据本发明的一种实施方式的线性振动马达中固定部由所述壳体向容纳腔内冲压形成的截面图。
图4示出根据本发明的一种实施方式的线性振动马达中固定部由结合固定在壳体内侧壁表面的上导磁板形成的截面图。
图5示出示出根据本发明的一种实施方式的线性振动马达中固定部由所述壳体向容纳腔内冲压形成的截面局部放大图。
图6示出根据本发明的一种实施方式的线性振动马达中固定部由结合固定在壳体内侧壁表面的上导磁板形成的截面局部放大图。
图7示出根据本发明的一种实施方式的线性振动马达磁体的顶部表面与固定部的底部表面外侧边缘结合固定的截面图。
图8示出根据本发明的一种实施方式的线性振动马达磁体的顶部表面与固定部的底部表面内侧边缘结合固定的截面图。
图9示出根据本发明的一种实施方式的线性振动马达磁体顶部表面的全部与固定部底部表面的部分结合且磁体的顶部表面外边缘与固定部的底部表面外边缘完全重合的截面图。
图10示出根据本发明的一种实施方式的线性振动马达固定部的底部表面结合固定于磁体的顶部表面的中央位置的截面图。
图11示出根据本发明的一种实施方式的线性振动马达磁体顶部表面的部分与固定部底部表面的全部结合且磁体的顶部表面外边缘与固定部的底部表面外边缘完全重合的截面图。
图12示出根据本发明的一种实施方式的线性振动马达固定部的底部表面与磁体的顶部表面完全重合的截面图。
图13示出根据本发明的一种实施方式的线性振动马达磁体底部表面设置下导磁板的截面图。
具体实施方式
在下述的描述中，出于说明的目的，为了提供对一个或者多个实施方式的全面理解，阐述了许多具体细节。然而，很明显，也可以在没有这些具体细节的情况下实现这些实施方式。在其它例子中，为了便于描述一个或者多个实施方式，公知的结构和设备以方框图的形式示出。
在下述具体实施方式的描述中所用到的“质量块”也可以称作“配重块”，均指与磁体或者线圈配合在马达壳体内作为振子组件发生振动的组件之一。另外，本发明主要用于描述中用到的线性振动马达的改进，也可以称作Y向振动马达。但是为了表述的方便，在以下的实施方式描述中，具体以线性振动马达为例进行说明。
为了更清楚地说明本发明，下面结合优选实施方式和附图对本发明做进一步的说明。但需要说明的是，为了便于理解，本发明中涉及的如“上表面”，“下表面”，“底部”，“顶部”等描述，仅是参照附图所提供样式的说明，其并非用于限制，本领域一般技术人员可以理解的是，当本发明中马达摆放位置发生变化时，文中所涉及的相应的描述及用词应当以其在马达中所起的实际作用为准。
本发明提供了一种改进的线性振动马达，通过设置中空部的磁体2及其与线圈3的配置方式，可最大化利用磁体2的磁性，提升线圈磁体磁力线的利用效率，提升了马达的电磁驱动力，驱动力的增大使得马达有效频宽增大，便于双频或多频谐振频率的应用，满足多频点下对马达所提供振感的要求，提高了马达的触觉体验；通过在第一壳体11的内表面设置向内凸起的固定部10，当磁体2固定粘接在所述固定部10上时，固定部10侧壁与第一壳体11 的内表面形成容胶槽，在涂胶时可以在一定范围内过量涂胶，多余的粘胶挤压溢出至该容胶槽，通过该改进增大了粘接面积和容胶量，使得磁体2的固定面更加牢固稳定。有效解决了目前磁体2的固定不牢固，时间长久后粘接面容易分离的问题，同时该改进使得磁体2在与壳体固定时提供了定位功能，更方便二者之间的连接固定。
具体的，结合图1至图2所示，图1示出本发明一种实施方式的振动马达的装配示意图。图2示出根据本发明的一种实施方式的线性振动马达的截面图。
本实施方式所提供的线性振动马达包括：定子组件，所述定子组件包括具有容纳腔的壳体1，位于所述容纳腔内且与所述壳体1结合固定的磁体2，所述磁体2包括中空部21，所述中空部21沿振子组件振动方向延伸；本发明中所述磁体2可为分段的或者连续的环状结构，本发明对此并不加以限制。
振子组件，所述振子组件包括与磁体2同轴设置的线圈3及围绕在所述线圈3外围的与线圈3同轴设置的质量块4；当所述振子组件振动时，所述线圈3随振子组件振动并插入所述磁体2的中空部21。
弹性支撑件5，配置为将所述振子组件悬置在所述壳体1的容纳腔内。
所述壳体包括与所述磁体同轴设置的固定部10，所述磁体2的顶部表面与所述固定部10的底部表面结合固定，本发明中所述固定部10可为分段的或者连续的环状结构，本发明对此并不加以限制。
此外，所述壳体1包括底部具有开口的第一壳体11，以及结合固定在所述开口处的第二壳体12；第一壳体11与第二壳体12构成具有容纳腔的壳体1。需要说明的是，本发明中第一壳体11与第二壳体12均由具有导磁性的材料制成，这样便于闭合磁体的磁力线，使磁体2的磁性作用最大化发挥，以提升马达的电磁驱动力。另外作为本发明一种具体的实施方式，如图1所示所述壳体1呈圆型结构，显然所述壳体1也可呈非圆形截面的结构，例如可以是长方体型、圆角长方体型等。本发明中所述振子组件具有导磁板6，所述线圈3及质量块4结合固定在所述导磁板6的上表面上，且线圈3与质量块4之间形成有供磁体2插入的间隙7。其中与导磁板6对应的，所述弹性支撑件5结合固定在所述导磁板6的下表面与第二壳体12的内侧表面之间，且配置为将所述振子组件悬置在所述壳体1的容纳腔内。。
本发明中与第一壳体11的顶壁内侧表面结合固定的呈环状结构的磁体2作为定子组件，线圈3作为振子组件的部分随振子组件振动插入所述磁体2 的中空部21，该种作为定子的呈环状结构的磁体2及其与作为振子的线圈3的配置方式，与现有的振动马达中所使用的柱状实芯结构磁体相比，由于现有柱状实芯磁体的磁力线是从中轴线向外辐射分散的，而本发明的呈环形结构磁体的磁力线是向中轴线上聚集的，因此设置在呈环形结构磁体中轴线上的线圈位置所处的磁场强度高于套设在柱状实芯磁体外围的线圈处；并且本发明中线圈设置于呈环形结构磁体的内部空间，其直径尺寸可以做的比较小，故线圈有效圈数会显著高于设置于柱状实芯磁体外围的大直径线圈的有效圈数，进而本发明所提供的线性振动马达，可最大化利用磁体的磁性，提升线圈磁体磁力线的利用效率，提升了马达的电磁驱动力，且驱动力的增大使得马达有效频宽增大，便于双频或多频谐振频率的应用，并满足多频点下对马达所提供振感的要求，提高了马达的触觉体验，并从整体上提高了线性振动马达综合性能。
此外，本发明还提供一种固定方式的改进，所述壳体包括与所述磁体对应设置的固定部10，所述磁体2的顶部表面与所述固定部10的底部表面结合固定。
结合图2所示，为了更详细的说明固定部10如何形成，本发明提供一种具体实施例，具体的，所述固定部的底部表面至少部分与所述磁体的顶部表面至少部分结合固定，其含义为：1、所述固定部底部表面的部分与所述磁体顶部表面的部分结合；2、所述固定部底部表面的部分与所述磁体顶部表面的全部相结合；3、所述固定部底部表面的全部与所述磁体顶部表面的部分相结合；4、所述固定部的底部表面全部与所述磁体的顶部表面的全部相结合。因此上述组合的关键在于是否会形成容胶槽103，该容胶槽103由磁体2的结合后余出的表面与固定部10的侧面以及壳体1的内侧壁相结合形成。根据以上描述，本发明提供两种具体的固定部的形成方式：1、所述固定部10为第一壳体11向容纳腔内冲压形成，如图3所示；2、所述固定部10由结合固定在壳体内侧壁表面的上导磁板形成，如图4。固定部的形成方式不同，制备的工艺不同，第1种形成方式工艺上一般采用冲压工艺制成，形成的固定部的底部表面大小随着凸起方向变小，，而第2种固定导磁板工艺往往是等径结构，但本发明的不限于此，因此不再赘述。固定部可以与第一壳体11在同一道制作工序里，节约了制备工艺。此外，如果下述实施例中并未对其固定部10的底部表面101和磁体2的顶部表面102的结合方式进行额外限定，则默认该实施例可以适用于本发明列举的以及未列举的所有可能的固定部10的底部表 面101和磁体2的顶部表面102的结合方式。例如图3和图4仅仅描述了固定部的底部表面的全部与磁体顶部表面的部分固定结合的一种方式，但图3、图4重点说明的是固定部形成方式，且并没有对其与磁体的结合方式进行额外限定，因此图3、图4仅仅作为举例，固定部的形成不局限于上述结合方式的限定。为了便于说明，图5示出图3的固定部局部放大图，图6示出图4的固定部局部放大图。
此外，当所述固定部10的底部表面101的部分与磁体2的顶部表面102的全部相结合时，如图3、图4。从图中可以明显看出，该实施例并不会产生容胶槽103，但在具体工艺中，固定部10能够为磁体2的固定提供定位点功能，方便磁体2固定，并且，固定部10的底面和侧面形成了向外扩张的一级台阶结构，在粘接固定时，固定部10能够起到一定的缓冲作用，使粘胶首先布满固定部的余出底面后漫延至壳体内侧壁上。
此外，当所述固定部的底部表面的部分与磁体的顶部表面的部分相结合时，本发明为了具体说明，列举出两个优选实施例：1、磁体2的顶部表面102与所述固定部10的底部表面101外侧边缘结合固定；2、所述磁体的顶部表面与所述固定部的底部表面内侧边缘结合固定；为了清楚说明上述两种情况，依次以图7、图8分别表示上述优选实施例1、2。如图7所示磁体2的顶部表面102与所述固定部10的底部表面101外侧边缘结合固定，磁体2的顶部表面102的外侧具有一个余出面，所述余出面为磁体顶部表面102超出固定部外边缘的部分面，所述余出面与固定部的外侧壁以及对应的壳体内侧壁形成容胶槽103。如图8所示所述磁体2的顶部表面102与所述固定部10的底部表面101内侧边缘结合固定，磁体2的顶部表面102的内侧具有一个余出面，所述余出面为磁体2顶部表面102超出固定部10内边缘的部分面，所述余出面与固定部的外侧壁以及对应的壳体内侧壁形成容胶槽103。
此外，当所述固定部底部表面101的部分与所述磁体顶部表面102的全部相结合时，本发明为了具体说明，列举出一种情况，如图4。但需要说明的是，图4虽然表示磁体顶部表面102的全部在固定部底部表面101上，但磁体顶部表面102也可以内边缘或者外边缘的其中之一与固定部底部表面101对应的内边缘或者外边缘的其中之一完全重合，如图9所示，图9仅仅作为解释说明完全重合的具体含义，图4还可以作为更优选的实施例，即所述磁体的顶部表面102结合固定在所述固定部的底部表面101中央位置，该更优选实施例使得工艺校对更为方便和准确。
此外，当所述固定部底部表面101的全部与所述磁体顶部表面102的部分相结合时，本发明为了具体说明，列举出两个优选的实施例。如图10所示，所述固定部的底部表面101结合固定在所述磁体的顶部表面102中央位置。或者，固定部底部表面101也可以内边缘或者外边缘的其中之一与磁体顶部表面102对应的内边缘或者外边缘的其中之一完全重合，如图11所示，虽然图11仅仅列举出其中固定部底部表面101的内边缘与磁体顶部表面102的内边缘完全重合，但也可以是固定部表面101的外边缘与磁体顶部表面102的外边缘完全重合。该实施例的结合方式同样能够使磁体顶部表面的余出部分与固定部侧壁以及壳体内侧壁形成容胶槽103，增大了容胶量以及固定面积，使固定部与磁体固定更加牢固。
此外，当所述固定部底部表面101的全部与所述磁体顶部表面102的全部相结合。如图12所示，该结合方式的含义为固定部底部表面101的内边缘与磁体顶部表面102的内边缘完全重合，且固定部底部表面101的外边缘与磁体顶部表面102的外边缘完全重合，或者可以描述为固定部底部表面101与磁体顶部表面102完全重合。该优选实施例虽然不能形成如上所述容胶槽103，但其在实施时，粘胶可以朝两个方向漫延，如图所示，即可以180°漫延，相比于直接固定，在提供定位功能的同时，可以增加涂胶量。
此外，在形成固定部10的同时，本发明在所述磁体底部表面固定下导磁板13，如图13所示这样使得下导磁板13的水平面与第一壳体11形成的空间内磁感线均匀且稳定，从而使用于喇叭等影音设备时具有较高的灵敏度和较低的失真，为了表述清楚，图13固定部10为上导磁板时，上导磁板和下导磁板13均采取加厚处理，突出显示上导磁板和下导磁板13，仅仅为了使图13更为直观。需要说明的是，本实施例仅仅说明下导磁板13的形成，并未对固定部底部表面101与磁体顶部表面102的结合方式进行限定或者对固定部的形成进行限定，本领域技术人员应当知晓本实施例可以采用本发明保护的任何结合方式，因此不再赘述。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定，对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动，这里无法对所有的实施方式予以穷举，凡是属于本发明的技术方案所引伸出的显而易见的变化或变动仍处于本发明的保护范围之列。

Claims (10)

  1. 一种线性振动马达，其特征在于，所述马达包括：
    定子组件，所述定子组件包括具有容纳腔的壳体，和位于所述容纳腔内且与所述壳体内侧表面结合固定的磁体，所述磁体包括中空部；
    振子组件，所述振子组件包括线圈和质量块；所述中空部沿振子组件振动方向延伸，所述振子组件振动时，所述线圈随振子组件振动并插入所述磁体的中空部；
    弹性支撑件，配置为将所述振子组件悬置在所述壳体的容纳腔内；
    所述壳体包括与所述磁体对应的固定部，所述磁体的顶部表面与所述固定部的底部表面结合固定。
  2. 根据权利要求1所述线性振动马达，其特征在于，
    所述固定部由所述壳体向容纳腔内冲压形成。
  3. 根据权利要求1所述线性振动马达，其特征在于，
    所述固定部由结合固定在壳体内侧壁表面的上导磁板形成。
  4. 根据权利要求1至3任一项权利要求所述线性振动马达，其特征在于，
    所述磁体的顶部表面的至少部分与所述固定部的底部表面的至少部分结合固定。
  5. 根据权利要求4所述线性振动马达，其特征在于，
    所述磁体通过其顶部表面结合固定在所述固定部底部表面的外侧边缘处。
  6. 根据权利要求4所述线性振动马达，其特征在于，
    所述磁体通过其顶部表面结合固定在所述固定部底部表面的内侧边缘处。
  7. 根据权利要求4所述线性振动马达，其特征在于，
    所述固定部通过其底部表面结合固定在所述磁体顶部表面的中央位置。
  8. 根据权利要求4所述线性振动马达，其特征在于，
    所述磁体通过其顶部表面结合固定在所述固定部底部表面的中央位置。
  9. 根据权利要求5至7任一项所述线性振动马达，其特征在于，
    所述磁体的顶部表面还包括与固定部侧壁以及壳体内侧壁形成容胶槽的部分。
  10. 根据权利要求4所述线性振动马达，其特征在于，
    所述磁体的底部表面结合固定有下导磁板。
PCT/CN2017/112170 2017-08-11 2017-11-21 一种线性振动马达 WO2019029053A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/638,329 US20200227993A1 (en) 2017-08-11 2017-11-21 Linear vibration motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201721005133.3U CN207069862U (zh) 2017-08-11 2017-08-11 一种线性振动马达
CN201721005133.3 2017-08-11

Publications (1)

Publication Number Publication Date
WO2019029053A1 true WO2019029053A1 (zh) 2019-02-14

Family

ID=61520526

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/112170 WO2019029053A1 (zh) 2017-08-11 2017-11-21 一种线性振动马达

Country Status (3)

Country Link
US (1) US20200227993A1 (zh)
CN (1) CN207069862U (zh)
WO (1) WO2019029053A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111262412B (zh) * 2018-12-03 2021-12-31 讯芯电子科技（中山）有限公司 振动电机及应用该振动电机的电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1716737A (zh) * 2004-06-29 2006-01-04 三星电机株式会社 表面可安装线性振动器
CN101404437A (zh) * 2008-11-11 2009-04-08 天津三星电机有限公司 线性振动电机
CN102148560A (zh) * 2010-02-08 2011-08-10 三星电机株式会社 竖直振动器
CN106849590A (zh) * 2017-02-08 2017-06-13 维沃移动通信有限公司 一种线性马达和电子设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1716737A (zh) * 2004-06-29 2006-01-04 三星电机株式会社 表面可安装线性振动器
CN101404437A (zh) * 2008-11-11 2009-04-08 天津三星电机有限公司 线性振动电机
CN102148560A (zh) * 2010-02-08 2011-08-10 三星电机株式会社 竖直振动器
CN106849590A (zh) * 2017-02-08 2017-06-13 维沃移动通信有限公司 一种线性马达和电子设备

Also Published As

Publication number Publication date
US20200227993A1 (en) 2020-07-16
CN207069862U (zh) 2018-03-02

Similar Documents

Publication Publication Date Title
US10348176B2 (en) Vibration motor
JP6026632B1 (ja) 振動電気モーター
US11290794B2 (en) Sounding device
US20180146294A1 (en) Vibration sound-producing apparatus
CN106954147A (zh) 电子设备
US10659883B2 (en) Magnetic bowl and sounding device
US11245320B2 (en) Linear vibration motor
EP2475190A1 (en) Multifunctional micro-speaker
CN107257190B (zh) 线性振动马达
WO2019029049A1 (zh) 线性振动马达
US20200045435A1 (en) Diaphragm and speaker
WO2019029050A1 (zh) 一种线性振动马达
US20200314548A1 (en) Speaker
WO2024130789A1 (zh) 多功能发声器件
CN208924471U (zh) 发声器件
CN111050252A (zh) 一种用于电子产品的振动发声装置及电子产品
US20230030236A1 (en) Exciter and electronic product
US20230224642A1 (en) Loudspeaker and earphone
WO2019029053A1 (zh) 一种线性振动马达
WO2019015069A1 (zh) 一种扬声器
CN209017298U (zh) 扬声器
WO2020098426A1 (zh) 振动电机
CN211089954U (zh) 一种激励器和电子产品
US11212620B2 (en) Screen sounding device
WO2019029055A1 (zh) 线性振动马达

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17921065

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17921065

Country of ref document: EP

Kind code of ref document: A1